step_p21/parser/
basic.rs

1//! Parser for basic alphabets defined in the table 1 of ISO-10303-21
2
3#![allow(clippy::manual_is_ascii_check)]
4
5use super::combinator::*;
6use nom::{
7    Parser,
8    branch::alt,
9    character::complete::{char, satisfy},
10};
11
12/// latin_codepoint = [space] | [digit] | [lower] | [upper] | [special] |
13/// [reverse_solidus] | [apostrophe]
14pub fn latin_codepoint(input: &str) -> ParseResult<'_, char> {
15    alt((
16        space,
17        digit,
18        lower,
19        upper,
20        special,
21        reverse_solidus,
22        apostrophe,
23    ))
24    .parse(input)
25}
26
27/// space = ` ` .
28pub fn space(input: &str) -> ParseResult<'_, char> {
29    char(' ')(input)
30}
31
32/// digit = `0` | `1` | `2` | `3` | `4` | `5` | `6` | `7` | `8` | `9` .
33pub fn digit(input: &str) -> ParseResult<'_, char> {
34    satisfy(|c| matches!(c, '0'..='9')).parse(input)
35}
36
37/// lower = `a` | `b` | `c` | `d` | `e` | `f` | `g` | `h`
38///       | `i` | `j` | `k` | `l` | `m` | `n` | `o` | `p`
39///       | `q` | `r` | `s` | `t` | `u` | `v` | `w` | `x`
40///       | `y` | `z` .
41pub fn lower(input: &str) -> ParseResult<'_, char> {
42    satisfy(|c| matches!(c, 'a'..='z')).parse(input)
43}
44
45/// upper = `A` | `B` | `C` | `D` | `E` | `F` | `G` | `H`
46///       | `I` | `J` | `K` | `L` | `M` | `N` | `O` | `P`
47///       | `Q` | `R` | `S` | `T` | `U` | `V` | `W` | `X`
48///       | `Y` | `Z` | `_` .
49pub fn upper(input: &str) -> ParseResult<'_, char> {
50    satisfy(|c| matches!(c, 'A'..='Z' | '_')).parse(input)
51}
52
53/// special  = `!` | `"` | `*` | `$` | `%` | `&` | `.` | `#` | `+` | `,`  | `-`
54/// | `(` | `)` | `?` | `/` | `:` | `;` | `<`  | `=` | `>` | `@` | `[` | `]` |
55/// `{` | `|` | `}`  | `^` | \` | `~` .
56pub fn special(input: &str) -> ParseResult<'_, char> {
57    satisfy(|c| {
58        matches!(
59            c,
60            '!' | '"'
61                | '*'
62                | '$'
63                | '%'
64                | '&'
65                | '.'
66                | '#'
67                | '+'
68                | ','
69                | '-'
70                | '('
71                | ')'
72                | '?'
73                | '/'
74                | ':'
75                | ';'
76                | '<'
77                | '='
78                | '>'
79                | '@'
80                | '['
81                | ']'
82                | '{'
83                | '|'
84                | '}'
85                | '^'
86                | '`'
87                | '~'
88        )
89    })
90    .parse(input)
91}
92
93/// reverse_solidus = `\\` .
94pub fn reverse_solidus(input: &str) -> ParseResult<'_, char> {
95    char('\\')(input)
96}
97
98/// apostrophe = `'` .
99pub fn apostrophe(input: &str) -> ParseResult<'_, char> {
100    char('\'')(input)
101}
step_p21/parser/basic.rs

step_p21/parser/
basic.rs
